Second-order cues to figure motion enable object detection during prey capture by praying mantises.

ABSTRACT: Detecting motion is essential for animals to perform a wide variety of functions. In order to do so, animals could exploit motion cues, including both first-order cues-such as luminance correlation over time-and second-order cues, by correlating higher-order visual statistics. Since first-order motion cues are typically sufficient for motion detection, it is unclear why sensitivity to second-order motion has evolved in animals, including insects. Here, we investigate the role of second-order motion in prey capture by praying mantises. We show that prey detection uses second-order motion cues to detect figure motion. We further present a model of prey detection based on second-order motion sensitivity, resulting from a layer of position detectors feeding into a second layer of elementary-mo

SUBMITTER: Nityananda V 

PROVIDER: S-EPMC6936431 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature